/**
* \param polylineGen True: use pattern along whole polyline, False: pattern per segment.
*/
void RExporter::exportPolyline(const RPolyline& polyline, bool polylineGen, double offset) {
RLinetypePattern p = getLinetypePattern();
bool continuous = false;
if (getEntity() == NULL || !p.isValid() || p.getNumDashes() <= 1 || draftMode || screenBasedLinetypes || twoColorSelectedMode) {
continuous = true;
}
if (!continuous) {
p.scale(getLineTypePatternScale(p));
if (RMath::isNaN(offset)) {
double length = polyline.getLength();
offset = p.getPatternOffset(length);
}
}
if (polylineGen) {
// pattern along whole polyline:
exportExplodable(polyline, offset);
}
else {
// pattern for each individual segment:
for (int i=0; i<polyline.countSegments(); i++) {
QSharedPointer<RShape> shape = polyline.getSegmentAt(i);
QSharedPointer<RLine> line = shape.dynamicCast<RLine>();
if (!line.isNull()) {
RExporter::exportLine(*line);
}
QSharedPointer<RArc> arc = shape.dynamicCast<RArc>();
if (!arc.isNull()) {
RExporter::exportArc(*arc);
}
}
}
}
double RExporter::exportLine(const RLine& line, double offset) {
double ret = RNANDOUBLE;
if (!line.isValid()) {
return ret;
}
double length = line.getLength();
if (length>1e100 || length<RS::PointTolerance) {
return ret;
}
double angle = line.getAngle();
// continuous line or
// we are in draft mode or
// QCAD is configured to show screen based line patterns
if (draftMode || screenBasedLinetypes || twoColorSelectedMode) {
exportLineSegment(line, angle);
return ret;
}
RLinetypePattern p = getLinetypePattern();
if (!p.isValid() || p.getNumDashes() <= 1) {
exportLineSegment(line, angle);
return ret;
}
p.scale(getLineTypePatternScale(p));
double patternLength = p.getPatternLength();
// avoid huge number of small segments due to very fine
// pattern or long lines:
if (patternLength<RS::PointTolerance || length / patternLength > RSettings::getDashThreshold()) {
exportLineSegment(line, angle);
return ret;
}
RVector* vp = NULL;
vp = new RVector[p.getNumDashes()];
for (int i = 0; i < p.getNumDashes(); ++i) {
vp[i] = RVector(cos(angle) * fabs(p.getDashLengthAt(i)),
sin(angle) * fabs(p.getDashLengthAt(i)));
}
if (RMath::isNaN(offset)) {
offset = p.getPatternOffset(length);
}
else {
double num = ceil(offset / patternLength);
offset -= num * patternLength;
}
bool done = false;
int i = 0;
RVector cursor(line.getStartPoint() + RVector::createPolar(offset, angle));
double total = offset;
double nextTotal;
bool isGap = false;
RLine dash;
do {
double dashLength = p.getDashLengthAt(i);
nextTotal = total + fabs(dashLength);
//qDebug() << "total: " << total;
//qDebug() << "nextTotal: " << nextTotal;
// dash, no gap. note that a dash can have a length of 0.0 (point):
if (dashLength > -RS::PointTolerance) {
isGap = false;
}
// gap:
else {
isGap = true;
}
// check if we're on the line already
// (since we might start before the line due to pattern offset):
if (nextTotal > 0.0) {
dash = RLine(cursor, cursor + vp[i]);
if (!isGap) {
// fist part is gap, then dash
ret = -nextTotal;
}
else {
// fist part is dash, then gap
ret = nextTotal;
}
// shorten at start of line:
if (total < 0.0 /*&& nextTotal > 0.0*/) {
dash.startPoint = line.startPoint;
ret = RNANDOUBLE;
}
// shorten at end of line:
if (/*total < length &&*/ nextTotal >= length - 1.0e-6) {
dash.endPoint = line.endPoint;
ret = RINFDOUBLE;
}
if (!isGap) {
exportLineSegment(dash, angle);
ret = nextTotal;
}
}
cursor += vp[i];
total = nextTotal;
done = total > length;
// export shape (zigzag, text, etc.) at end of dash / gap:
if (p.hasShapeAt(i)) {
QList<RPainterPath> pps = p.getShapeAt(i);
exportLinetypeShape(pps, line, total, length, angle, cursor);
}
++i;
if (i >= p.getNumDashes()) {
i = 0;
}
} while (!done);
delete[] vp;
return ret;
}
void RExporter::exportSpline(const RSpline& spline, double offset) {
RLinetypePattern p = getLinetypePattern();
bool continuous = false;
if (getEntity() == NULL || !p.isValid() || p.getNumDashes() <= 1 || draftMode || screenBasedLinetypes || twoColorSelectedMode) {
continuous = true;
}
p.scale(getLineTypePatternScale(p));
double patternLength = p.getPatternLength();
if (patternLength<RS::PointTolerance || spline.getLength() / patternLength > RSettings::getDashThreshold()) {
continuous = true;
}
if (!continuous) {
if (getEntity()!=NULL && (getEntity()->getType()!=RS::EntitySpline || RSpline::hasProxy())) {
// we have a spline proxy:
RShapesExporter(*this, QList<QSharedPointer<RShape> >() << QSharedPointer<RShape>(spline.clone()), offset);
}
else {
// fallback if we don't have a spline proxy:
p.scale(getLineTypePatternScale(p));
if (RMath::isNaN(offset)) {
double length = spline.getLength();
offset = p.getPatternOffset(length);
}
exportExplodable(spline, offset);
}
}
else {
// version <= 3.0.0 was (line interpolation):
//exportExplodable(spline, offset);
// performance improvement (using real splines):
RPainterPath pp;
pp.setPen(currentPen);
pp.setInheritPen(true);
pp.addSpline(spline);
exportPainterPaths(QList<RPainterPath>() << pp);
}
/*
RLinetypePattern p = getLinetypePattern();
p.scale(getLineTypePatternScale(p));
if (RMath::isNaN(offset)) {
double length = spline.getLength();
offset = p.getPatternOffset(length);
}
double currentOffset = offset;
QList<QSharedPointer<RShape> > sub = spline.getExploded();
QList<QSharedPointer<RShape> >::iterator it;
for (it=sub.begin(); it!=sub.end(); ++it) {
QSharedPointer<RLine> line = (*it).dynamicCast<RLine>();
if (!line.isNull()) {
exportLine(*line.data(), currentOffset);
currentOffset -= line->getLength();
}
QSharedPointer<RArc> arc = (*it).dynamicCast<RArc>();
if (!arc.isNull()) {
exportArc(*arc.data(), currentOffset);
currentOffset -= arc->getLength();
}
}
*/
}
